On native Windows the default text encoding is the ANSI code page
(cp1252 on en/pt systems), so the module-level read_text() calls in
eight static tests fail at collection with UnicodeDecodeError on bytes
0x81/0x90 that appear in static/js/chat.js, chatRenderer.js, app.js,
index.html and src/visual_report.py. Pass encoding="utf-8" like the
other 700+ tests in the suite already do.
Found by running the suite natively on Windows 11 (Python 3.11).
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Alexandre Teixeira <general@alexandreteixeira.dev>
